out-of-tree

out-of-tree is the kernel {module, exploit} development tool.

out-of-tree was created to reduce the complexity of the environment for developing, testing and debugging Linux kernel exploits and out-of-tree kernel modules (hence the name "out-of-tree").

Installation

GNU/Linux (with Nix)

sudo apt install podman || sudo dnf install podman

curl -L https://nixos.org/nix/install | sh
mkdir -p ~/.config/nix
echo "experimental-features = nix-command flakes" >> ~/.config/nix/nix.conf

# stable
nix profile install nixpkgs#out-of-tree

# latest
nix profile install git+https://code.dumpstack.io/tools/out-of-tree

macOS

Note: case-sensitive FS is required for the ~/.out-of-tree directory.

$ brew install podman
$ podman machine stop || true
$ podman machine rm || true
$ podman machine init --cpus=4 --memory=4096 -v $HOME:$HOME
$ podman machine start
$ brew tap out-of-tree/repo
$ brew install out-of-tree

Read documentation for further info.

Examples

Download all Ubuntu 24.04 kernels:

$ out-of-tree kernel genall --distro-id=Ubuntu --distro-release=24.04

Run tests based on .out-of-tree.toml definitions:

$ out-of-tree pew

Test with a specific kernel:

$ out-of-tree pew --realtime-output  --distro-id=ubuntu --kernel-regex=6.8.0-41-generic

Run debug environment:

$ out-of-tree debug --distro-id=ubuntu --distro-release=24.04 --kernel-regex=6.8.0-41-generic